<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
Hello, 欢迎注册~
<form action="/userRegist" method="post">
    username:<input type="text" name="username" >
    password: <input type="text" name="password">
    <input type="submit" value="I want to register">
</form>
</body>
</html>